Color image processing apparatus and color image processing method
US6704444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2002 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Oct 15, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The color image processing apparatus comprises; a compressing/extending section for compressing the BRG input signals, storing the compressed signals in the page memory, restoring the compressed BGR input signals, and outputting the restored signals; a color converting section for receiving the restored signals and converting the restored signals to YMC signals; a ink block generating and ground removing section for generating a K (black) signal according to the YMC signals and removing the ground; and an area separation type of filter for grouping a plurality of pixels in to blocks, identifying the type of image of each block, and generating an area separation signal for an intermediate tone, a black character, or a colored character.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.